:root{--bg:#0b0f17;--text:#eaf0ff;--muted:#a9b5d1;--line:#ffffff1a;--acc:#7aa8ff;--acc2:#8cffc7;--warn:#fc6;--shadow:0 14px 40px #00000059;--radius:18px;--max:1040px}*{box-sizing:border-box;position:relative}html{scroll-behavior:smooth;scroll-padding-top:72px}html,body{margin:0;padding:0}body{color:var(--text);background:radial-gradient(1200px 700px at 20% 0%,#1b2c5a 0%,#1b2c5a00 55%),radial-gradient(900px 600px at 90% 30%,#1a4a3c 0%,#1a4a3c00 60%),var(--bg);font-family:ui-sans-serif,system-ui,-apple-system,Hiragino Kaku Gothic ProN,Noto Sans JP,Yu Gothic,Meiryo,sans-serif;line-height:1.6}a,button{color:inherit;text-decoration:none;transition:color .2s,background-color .2s}